CN1969443A - Electric machine and method for adjusting an axial distance therein - Google Patents

Electric machine and method for adjusting an axial distance therein Download PDF

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Publication number
CN1969443A
CN1969443A CNA2005800198577A CN200580019857A CN1969443A CN 1969443 A CN1969443 A CN 1969443A CN A2005800198577 A CNA2005800198577 A CN A2005800198577A CN 200580019857 A CN200580019857 A CN 200580019857A CN 1969443 A CN1969443 A CN 1969443A
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CN
China
Prior art keywords
bearing
motor
sensing wheel
transducer
axle
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Granted
Application number
CNA2005800198577A
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Chinese (zh)
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CN1969443B (en
Inventor
K·马尔德纳
A·韦尔勒
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN1969443A publication Critical patent/CN1969443A/en
Application granted granted Critical
Publication of CN1969443B publication Critical patent/CN1969443B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K15/00Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention relates to an electric machine (10) comprising a sensor (42) and a transmitter wheel (46) from which the sensor (42) axially taps a signal, a front surface (48) of the sensor (42) being adjacent to an annular surface (50) on a front side (52) of the transmitter wheel (46). Said electric machine also comprises a shaft (22) to which the transmitter wheel (46) is fixed, a fixed bearing (26) and a movable bearing (24) in which the shaft (22) is mounted, and a housing (14). The transmitter wheel (46) can be axially displaced on the shaft (22). The electric machine (10) is provided with an abutment (36) comprising an abutment surface (38) which is oriented in the direction of the fixed bearing (26) or the transmitter wheel (46). Said transmitter wheel (46) also comprises an abutment surface (56). The abutment surface (38) of the abutment (36) and the abutment surface (56) of the transmitter wheel (46) axially face each other. The abutment surface (38) of the section (36) is embodied in relation to the abutment surface of the sensor magnet, in the direction of the transmitter wheel (46) or the fixed bearing (26), in such a way that the two facing active surfaces of the sensor and the transmitter wheel do not exactly touch. In this way, the performance variance of the assembled electric machine (10) is reduced by minimising the required axial distance tolerances between the sensor (42) and the transmitter wheel (46).

Description

Motor and being used to is regulated the method for the axial distance of motor
Technical field
The present invention relates to a kind of motor as described in the preamble according to claim 1.A kind of like this motor comprises a transducer, a sensing wheel, an axle, a rigid bearing, a floating bearing and a housing, wherein said transducer axially obtains signal on described sensing wheel, annular surface on the end face of transducer and sensing wheel distolateral is adjacent, sensing wheel is fixed on the described axle, and described axle is bearing in rigid bearing and the floating bearing.
Background technology
Particularly electronically commutated motor (EC-motor) is to control by the signal of sensor acquisition.Therefore the harmonious of sensing system has the decision meaning for rectification accuracy constantly, connects the single coil of stator constantly by rectification.If the phase place that electronic installation recognizes magnetic flux then reaches the optimization of rectification accuracy through zero crossing.The effect of reversing error is played in variation wherein, and causes the power distortion of motor.Sensing system commonly used is made up of for this transducer provides the sensing wheel of signal a transducer and one.In order to reach accurate reversal point, transducer and sensing wheel are mutually positioning very near.So just reduced reversing error.Usually single component reaches this point by installing very accurately.What in addition, transducer used is the strong sensor-magnet of remanent magnetism.
Summary of the invention
Task according to the present invention provides a kind of axial mount scheme, and by this scheme, described motor, particularly EC-motor reduce tolerance with sensor axis to Information Monitoring ground, and can assemble with less installation fee land used.This programme also can use in having the DC-motor of position-recognizing system.Reach this point by motor with claim 1 feature.
Motor with claim 1 feature according to the present invention has following advantage, i.e. the power dissipation that reduces necessary electromotor by minimizing of the axial distance tolerance between transducer and sensor-magnet.
For this reason, described motor comprises a transducer, a sensing wheel, an axle, a rigid bearing, a floating bearing and a housing, wherein, described transducer axially obtains signal on described sensing wheel, annular surface on the end face of described transducer and sensing wheel distolateral is adjacent, described sensing wheel is fixed on the described axle, described axle is bearing in rigid bearing and the floating bearing, described sensing wheel can axially move on axle, motor is arranged to few block on axle, this block has at least one stop surface, this stop surface points to along the direction of rigid bearing, described sensing wheel also has at least one stop surface, the stop surface that retaining is determined and the stop surface of sensing wheel face with each other, and axially opposed, the stop surface of block axially aligns with the end face of transducer towards the direction of rigid bearing, perhaps exceeds the end face of transducer.
Therefore this can improve the signal accuracy of sensing system, and causes reducing the dispersion width in the power characteristic of EC-motor or EC-generator.This makes that the dimensional requirement of member of manufacturing must be lower than member up to the present, because can carry out the correction of size in installation process.Installation procedure is also simple in addition.The measure that reaches function of the present invention can be included in the design simply.
If housing has an at least axially zone of elastically deformable, rigid bearing and axle can move towards the floating bearing direction on this zone, then can regulate end play the most simply, thereby sensing wheel can be extruded by block towards the rigid bearing direction.
If block is arranged on the flange away from rigid bearing of motor, and floating bearing is arranged in the bearing pedestal in the flange and then produces a kind of simple structure, and wherein, described block is preferably formed on the bearing pedestal of floating bearing.
In order to obtain the zone of axial elasticity, housing is jar shape preferably, and rigid bearing is located in the bottom, and the bottom can be out of shape around rigid bearing axial elasticity ground in the zone of a dish type at least.
If transducer is arranged on the electronic building brick, and this electronic building brick is arranged between flange and the housing, and this is the simplest for installation in the future.
Driver element especially for automobile, as the similar means that turns to driving mechanism, glass regulator, sliding top skylight driving mechanism, drive system adjuster or have such motor also has following advantage, promptly reduce the power dissipation that causes by installation, wherein, the tolerance in coil, magnet remanent magnetism, sensor sensitivity itself etc. can not be corrected.
Obtain being used to regulating a kind of straightforward procedure of the axial distance of motor by following measure, being about to motor supports, apply a power for the zone of an axial at least elastically deformable of housing, make rigid bearing and axle move towards the direction of floating bearing, and sensing wheel is kept off certainly and being pushed towards the rigid bearing direction, and cancel power again, between transducer and sensing wheel, produce axial distance like this.
Also can obtain this result by following measure in addition, be about to floating bearing and be installed in the flange, and transducer is fixed in the electronic building brick, this electronic building brick is fixed on the flange, form one first pre-arrangement like this; Axle and sensing wheel are joined in the housing, formed one second pre-arrangement like this, two pre-arrangements are connected to each other, and sensing wheel is near block.
If tracking Control is carried out in the distortion of housing, then in production in enormous quantities, can realize this method simply.
The device that is used to implement this method has plunger and mechanism that is used to measure the housing shift motion that an electric machine support, apply effect to housing and apply power.
By obtaining other advantage and favourable improvement project in dependent claims and the specification.
Description of drawings
An embodiment shown in the drawings is described in detail this embodiment in following explanation.Unique accompanying drawing represents to be clamped in the longitdinal cross-section diagram of an EC-motor on the device.
Embodiment
Accompanying drawing illustrates a motor 10, and this motor is preferably an electronically commutated motor, in other words the direct current machine of brushless (DC-motor).Motor 10 is parts of the preferred driver element 12 that uses in automobile.Driver element 12 is one and turns to driving mechanism, glass regulator, sliding top skylight driving mechanism, drive system adjuster or similar means.
In the housing 14 of a jar shape, motor 10 comprises a stator 18 and a rotor 20 that is used for producing with this stator 18 permanent-magnet-field of outputting power, for example torque with winding 16.The axle 22 of rotor 20 is bearing in a floating bearing 24 and the rigid bearing 26, and these two bearings are preferably rolling body bearing, and wherein, floating bearing 24 also can be designed to a kind of sliding bearing.
Floating bearing 24 is arranged in the bearing pedestal 28 of flange 30.Axle 22 is protruding from flange.In addition, flange 30 is used for motor 10 and is connected with the flange of a structure member, also is used for closure casing 14.Flange 30 has a flat jar shape, and it has the bottom 32 and an edge 34 that is connected with housing 14 that are provided with bearing pedestal 28 thereon.This connection can be undertaken by screw element, bonding, roll extrusion processing or similar fashion.Stretch out contact pin 36 from bearing pedestal 28, they form a block.Contact pin 36 is extended substantially parallel with axle 22, and with the direction of the rigid bearing 26 of stop surface 38 in the housing 14 that is arranged on jar shape.Stop surface 38 extends perpendicular to axle 22.The single for example contact pin 36 of annular also can be set, and this contact pin has a space distolateral, and these spaces are divided into a plurality of stop surfaces 38 with stop surface 38.Yet at least one contact pin 36 should be set.
In addition, an electronic building brick 40 is being set on the flange 30 and between this flange and body 14.This electronic building brick 40 comprises that one embeds in the plastics and unshowned punching press grizzly bar, and this punching press grizzly bar-where necessary is arranged on control device on the punching press grizzly bar-power supply of a stator 18 and an outside is coupled together by one.Yet also can be provided with and being connected an of peripheral control unit.A transducer 42 of flange 30 dorsad is set on electronic building brick 40, wherein is preferably Hall element in the present embodiment.This transducer 42 is installed on the printed circuit board (PCB) 44, and this printed circuit board (PCB) extends perpendicular to axle 22.Yet this transducer 42 also can be directly installed on the punching press grizzly bar.
Fix a sensing wheel 46 between electronic building brick 40 and the stator 18 on axle 22 in other words at transducer 42, transducer 42 axially obtains signal on this sensing wheel.For this reason, one distolateral 52 the annular surface 50 of transducer 42 end face 48 next-door neighbour's sensing wheel 46 is provided with.Annular surface 50 forms on a magnet ring 54 of sensing wheel 46.Can gather axle 22 rotation rotating speed in other words by this measure transducer 42.Magnet ring 54 is arranged on the wheel hub 55, and wheel hub for example is made of plastics, and it has the interference fit in other words of interference size on axle 22, and wherein, sensing wheel 46 still can move axially under the effect of power even so.Except annular surface 50 external sensing wheels 46 distolateral 52 on also be provided with a stop surface 56, this stop surface is preferably formed on the wheel hub 55.The stop surface 38 of contact pin 36 and the stop surface 56 of sensing wheel 46 face with each other, and the stop surface 38 of contact pin in other words 36 points to sensing wheel 46.They have identical radial distance apart from axle 22, and see that from the circumferencial direction of axle 22 or motor 10 they are in identical position respectively, so they are axially opposed.
Direction along rigid bearing 28 is seen, the stop surface 38 of contact pin 36 is so to be provided with respect to the stop surface 56 of sensor-magnet 54, two opposed active surfaces that are transducer 42 and sensing wheel 46 just in time do not contact mutually, and perhaps they have a few tenths of mm distance.
Bottom 58 at the housing 14 of jar shape is provided with a bearing pedestal 60 for rigid bearing 26.Bottom 58 threaded shaft bearings 60 have the disk-shaped regions 62 of an axial elastically deformable.And the annular wall 64 of housing 14 elasticity under the effect of axial force is much smaller.
Motor 10 is clamped in the device that only schematically shows 66.This device 66 has a support 68 that is used for motor 10, wherein preferably flange 30 is clamped in this support 68.A plunger 70 is set in addition, and this plunger is for example pressed to bearing pedestal 30, and therefore applies power in other words to housing 14 effects.In addition, also be provided with one and be used to measure plunger 70 mechanism 72 of rigid bearing 26 shift motions in other words, control moving forward into line trace by this measure.
Before being clamped to motor 10 on the device 64, floating bearing 24 is installed in the flange 30.Transducer 42 is arranged on the electronic building brick 40.Then electronic building brick 40 is fixed on the flange 30.One first pre-arrangement has appearred like this.Axle 22 is installed in the housing 14 together with sensing wheel 46, has occurred one second pre-arrangement like this.Sensing wheel 46 has been enclosed within on the axle 22 in this process, makes that this sensing wheel contacts with contact pin 36 when connecting.These two pre-arrangements clamp each other then.Sensing wheel 46 and contact pin 36 are among a kind of prestressing force like this.If these two pre-arrangements clamp each other and the situation that sensing wheel 46 moves towards rigid bearing 26 directions by contact pin 36 also may occur.
If motor 10 is supported on the device 66, then use plunger 70 extrusion axis bearings 60.Apply a power to the zone of the axial elastically deformable of housing 14 like this, a rigid bearing 26 and axle 22 directions towards floating bearing 24 move thus.Sensing wheel 46 is continued to push towards rigid bearing 26 directions by contact pin 36 in this case.If by this power of cancellation of returning of plunger 70, then the elastic part of bottom 58 rebounds, and produces axial distance like this between transducer 42 and sensing wheel 46.By this measure can make transducer 42 and annular surface 50 in other words the distance between the sensor-magnet surface keep as much as possible for a short time.
Because the technology cost in production in enormous quantities, installation component is that tracking Control is installed usually.Therefore the single tolerance of the structure member of two pre-arrangements has very big influence apart from tolerance between the sensor-magnet surface in other words to transducer 42 and annular surface 50.By in installation process movably the second pre-arrangement (sensing wheel 46 on rotor 20) eliminated from housing 14 through the tolerance chain of fixed bearing to sensing wheel 46.The tolerances of the maximum of present total is to be produced by the physical dimension between the stop surface 38 of the end face of the transducer on the electronic building brick 40 42 and the contact pin 36 on the flange 30.Yet this influence can be restricted to minimum by the suitable given size chain of single parts.
So select the tolerance structure of the first pre-arrangement " flange 30 and electronic building brick 40 ", make the stop surface 38 of contact pin 36 reach the end face 48 of transducer 42 at least always, make the axial setting pressure of sensing wheel 46 to be directed to flange 30 by contact pin 36.
The second pre-arrangement " sensing wheel 46 and housing 14, rotor 20 and stator 18 " is structure so, makes that sensing wheel 46 axially moves towards the direction of rigid bearing 26 by the contact pin on the flange 30 36 in installation process.
Certainly a transducer 42 shown in replacing also can be provided with a plurality of transducers 42.

Claims (12)

1. a motor (10), comprise at least one transducer (42), a sensing wheel (46), an axle (22), a rigid bearing (26), a floating bearing (24) and a housing (14), wherein, described transducer (42) picked up signal axially on described sensing wheel (46), annular surface (50) on the end face (48) of described transducer (42) and distolateral (52) of sensing wheel (46) is adjacent, described sensing wheel (46) is fixed on the described axle (22), described axle (22) is bearing in rigid bearing (26) and the floating bearing (24), it is characterized in that, described sensing wheel (46) can axially be gone up at axle (22) and move, at least one block (36) is set on motor (10), this block has at least one stop surface (38), and this stop surface points to along the direction of rigid bearing (26); Described sensing wheel (46) also has at least one stop surface (56); The stop surface (38) of described block (36) and the stop surface (56) of sensing wheel (46) face with each other and are axially opposed; The stop surface (38) of described block (36) axially aligns with the end face (48) of transducer (42) along the direction of rigid bearing (26), perhaps exceeds the end face (48) of transducer (42).
2. according to the described motor of claim 1 (10), it is characterized in that, described housing (14) has an at least axially zone (62) of elastically deformable, rigid bearing on this zone (26) and axle (22) can move towards the direction of floating bearing (24), make described sensing wheel (46) can pass through the direction extruding of block (36) towards rigid bearing (26).
3. according to claim 1 or 2 described motors (10), it is characterized in that described sensing wheel (46) and axle (22) have axial interference fit, and removable and when motor move, firmly be connected axially firmly the time with (a 22) maintenance.
4. according to each described motor (10) in the claim 1 to 3, it is characterized in that described block (36) is arranged on the flange away from rigid bearing (26) (30) of motor (10); And floating bearing (24) is arranged in the bearing pedestal (28) in the flange (30), and wherein, block (36) is preferably formed on the bearing pedestal (28) of floating bearing (24).
5. according to each described motor (10) in the claim 1 to 4, it is characterized in that described housing (14) is a jar shape; Described rigid bearing (26) is arranged on bottom (58); And described bottom (58) at least in a disk-shaped regions (62) around rigid bearing (26) but axial elasticity distortion.
6. according to each described motor (10) in the claim 1 to 6, it is characterized in that described housing (14) has a Hookean region along axial direction, thus rigid bearing (26) and axle (22) but axial elasticity motion.
7. according to each described motor (10) in the claim 1 to 6, it is characterized in that described transducer (42) is arranged on the electronic building brick (40), this electronic building brick is arranged between the bearing (24,26).
8. especially for the driver element (12) of automobile, for example be to have as turning to driving mechanism, glass regulator, sliding top skylight driving mechanism, drive system adjuster or kindred organization according to the motor (10) of each described EC-motor and DC-motor in the aforementioned claim.
9. be used for regulating method, it is characterized in that, motor (10) is supported according to the axial distance of each described motor (10) of aforementioned claim; Apply a power for the zone (62) of an axial at least elastically deformable of housing (14), make rigid bearing (26) and axle (22) move, and sensing wheel (46) is by the direction extruding of at least one block (36) towards rigid bearing (26) towards the direction of floating bearing (24); And cancel described power again, between transducer (42) and sensing wheel (46), produce axial distance thus.
10. in accordance with the method for claim 9, it is characterized in that, floating bearing (24) is installed in the flange (30), and transducer (42) is installed in the electronic building brick (40); Electronic building brick (40) is fixed on the flange (30), thereby forms one first pre-arrangement; Axle (22) and sensing wheel (46) are joined in the housing (14), form one second pre-arrangement like this; Two pre-arrangements are connected to each other; And sensing wheel in installation process (46) is near block (36).
11., it is characterized in that the distortion of tracking Control housing (14) according to claim 9 or 10 described methods.
12. carry out device (66) according to each described method in the claim 9 to 11, it is characterized in that described device (66) has a support (68) that is used for motor (10), one and housing (14) applied effect and apply the plunger (70) of power and mechanism (72) that one is used to measure the shift motion of rigid bearing (26).
CN2005800198577A 2004-06-18 2005-04-14 Electric machine, driving unit, method for adjusting an axial distance in the electric machine and implementing apparatus thereof Expired - Fee Related CN1969443B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004029535A DE102004029535A1 (en) 2004-06-18 2004-06-18 Electric machine and method for adjusting an axial distance of the electric machine
DE102004029535.2 2004-06-18
PCT/EP2005/051644 WO2005124977A1 (en) 2004-06-18 2005-04-14 Electric machine and method for adjusting an axial distance therein

Publications (2)

Publication Number Publication Date
CN1969443A true CN1969443A (en) 2007-05-23
CN1969443B CN1969443B (en) 2010-10-27

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CN2005800198577A Expired - Fee Related CN1969443B (en) 2004-06-18 2005-04-14 Electric machine, driving unit, method for adjusting an axial distance in the electric machine and implementing apparatus thereof

Country Status (7)

Country Link
US (1) US7528564B2 (en)
EP (1) EP1761994B1 (en)
CN (1) CN1969443B (en)
DE (2) DE102004029535A1 (en)
ES (1) ES2349040T3 (en)
PL (1) PL1761994T3 (en)
WO (1) WO2005124977A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103701246A (en) * 2013-12-31 2014-04-02 长城汽车股份有限公司 Novel motor structure
CN106487163A (en) * 2015-08-27 2017-03-08 大众汽车有限公司 There is the rotor of the sensing wheel of fixation by holding board

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Publication number Priority date Publication date Assignee Title
DE102011084702A1 (en) * 2011-10-18 2013-04-18 Continental Automotive Gmbh Method of making a BLDC motor
EP3326273B1 (en) * 2015-07-21 2022-08-31 Société Industrielle de Sonceboz S.A. Electrical actuator with integrated position encoder
JPWO2017150487A1 (en) 2016-03-03 2018-12-27 日本電産株式会社 motor
DE102018210704A1 (en) * 2018-06-29 2020-01-02 Robert Bosch Gmbh transducer
JP7519851B2 (en) * 2020-09-11 2024-07-22 ニデックモビリティ株式会社 Motor modules, management modules, in-vehicle device control systems

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DE2911922A1 (en) * 1979-03-27 1980-10-02 Mulfingen Elektrobau Ebm COLLECTORLESS OUTDOOR RUNNER DC MOTOR
JPS55153261A (en) * 1979-05-15 1980-11-29 Mitsubishi Electric Corp Attaching device of detecting element for flat type motor
JPS63240358A (en) * 1987-03-25 1988-10-06 Yaskawa Electric Mfg Co Ltd Encoder regulating mechanism for brushless motor
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DE10323073A1 (en) * 2003-05-22 2004-12-09 Daimlerchrysler Ag Stepless transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103701246A (en) * 2013-12-31 2014-04-02 长城汽车股份有限公司 Novel motor structure
CN103701246B (en) * 2013-12-31 2016-06-01 长城汽车股份有限公司 Electric machine structure
CN106487163A (en) * 2015-08-27 2017-03-08 大众汽车有限公司 There is the rotor of the sensing wheel of fixation by holding board
CN106487163B (en) * 2015-08-27 2019-10-15 大众汽车有限公司 With the rotor of the sensing wheel of fixation by holding board

Also Published As

Publication number Publication date
CN1969443B (en) 2010-10-27
EP1761994A1 (en) 2007-03-14
US7528564B2 (en) 2009-05-05
PL1761994T3 (en) 2011-01-31
EP1761994B1 (en) 2010-07-28
WO2005124977A1 (en) 2005-12-29
US20080022783A1 (en) 2008-01-31
DE102004029535A1 (en) 2006-01-05
ES2349040T3 (en) 2010-12-22
DE502005010012D1 (en) 2010-09-09

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